【正文】
an English song in the park is Tony’s sister. A. is singing B. who is singing C. sang D. was singing 3. Please bring the dictionary ______ I lent you last week. A. which B. it C. who D. what 4. I ______ your good friend will try my best to help you out. A. who is B. who am C. that is D. what is[ 5. My father has many books, some of _______ are on history.